My GP, when I visited the next morning, immediately suspected a renal calculus, more commonly called a kidney stone.
第二天一早我去看医生，他立即就怀疑是肾结石。
There was a large renal calculus (stone) that obstructed the calyces of the lower pole of this kidney, leading to a focal hydronephrosis (dilation of the collecting system).
大的肾结石阻塞了肾脏下极的肾盏，导致了局部的肾盂积水。
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